Texture painting bug (weird lines)

Support Materials and Textures
1

Hi All,

I am doing the texture painting with an image texture and random setting. During the painting, there are many strange straight lines pop up as shown in the following screenshot. I use Ubuntu 12.04 with blender 2.72
Any ideas? Thank you in advance.

blender_texture_paint_weird lines.jpg1816×1038 381 KB

2

does your mesh have n-gons ( faces with more than four vertexes ) in it? I have seen a similar thing cause by n-gons.

3

Thank you Modron. I really appreciate your kind help.
I had some ngons between fine and coarse meshes. After converting all the ngons to tri, that ‘line bug’ disappeared.

4

Hi Modron,
How can I change my post into solved status?

5
6

thanks a lot ~~